The field guide illustrator David Sibley gave instructions for drawing a bird.
Illustrator David Sibley's bestselling field guides for birdwatchers cover more than 800 species - CBS News
David Sibley
A BIRDS
How to Draw a Bird the David Sibley Way - The New York Times
The Bird Way: A New Look at How Birds Talk, Work, Play, Parent, and Think: Ackerman, Jennifer: 9780735223035: : Books
Feeling Cooped Up? Let Your Mind Fly Free With 'What It's Like To Be A Bird
Open Book: David Sibley's bird paintings featured as an adult coloring book
Feeling Cooped Up? Let Your Mind Fly Free With 'What It's Like To Be A Bird
David Sibley
The Sibley Guide to Birds, Second Edition: A Review of an Iconic Guide in a New Edition - 10,000 Birds
How Sketching Birds Changes the Way You See Them - The New York Times
My Pen-and-ink technique – Sibley Guides
David Sibley
How Sketching Birds Changes the Way You See Them - The New York Times